LaTeX Tricks (2)

I have been working on my dissertation using LaTeX for one week. Most of the contents came from my proposal. Now the structure has been set up and it is around 40 pages already. The next step is to fill the blanks. During the time period, I solved some problems by some tricks found on the Internet.

1. Upper or Lower case:
It is very easy to write upper or lower case in LaTeX. The cubic meter could be written as by $m^3$, but the display is mathematical, and the letters shows italics. If add \text in front of the code as , the normal font appeared[1].